18825838844 has 24 divisors (see below), whose sum is σ = 34344702336. Its totient is φ = 9019080000.

The previous prime is 18825838781. The next prime is 18825838847. The reversal of 18825838844 is 44883852881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825838847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739067 + ... + 764114.

It is an arithmetic number, because the mean of its divisors is an integer number (1431029264).

Almost surely, 2^18825838844 is an apocalyptic number.

It is an amenable number.

18825838844 is a deficient number, since it is larger than the sum of its proper divisors (15518863492).

18825838844 is a wasteful number, since it uses less digits than its factorization.

18825838844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503317 (or 1503315 counting only the distinct ones).

The product of its digits is 15728640, while the sum is 59.

The spelling of 18825838844 in words is "eighteen billion, eight hundred twenty-five million, eight hundred thirty-eight thousand, eight hundred forty-four".